Cargando…
A local sensor for joint temperature and velocity measurements in turbulent flows
We present the principle for a micro-sensor aimed at measuring local correlations of turbulent velocity and temperature. The operating principle is versatile and can be adapted for various types of flow. It is based on a micro-machined cantilever, on the tip of which a platinum resistor is patterned...
Autores principales: | , , , , , , , , |
---|---|
Lenguaje: | english |
Publicado: |
2018
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.1063/1.4989430 http://cds.cern.ch/record/2694251 |
_version_ | 1780964104422293504 |
---|---|
author | Salort, Julien Rusaouën, Éléonore Robert, Laurent du Puits, Ronald Loesch, Alice Pirotte, Olivier Roche, Philippe-E Castaing, Bernard Chilla, Francesca |
author_facet | Salort, Julien Rusaouën, Éléonore Robert, Laurent du Puits, Ronald Loesch, Alice Pirotte, Olivier Roche, Philippe-E Castaing, Bernard Chilla, Francesca |
author_sort | Salort, Julien |
collection | CERN |
description | We present the principle for a micro-sensor aimed at measuring local correlations of turbulent velocity and temperature. The operating principle is versatile and can be adapted for various types of flow. It is based on a micro-machined cantilever, on the tip of which a platinum resistor is patterned. The deflection of the cantilever yields an estimate for the local velocity, and the impedance of the platinum yields an estimate for the local temperature. The velocity measurement is tested in two turbulent jets: one with air at room temperature which allows us to compare with well-known calibrated reference anemometers, and another one in the GReC jet at CERN with cryogenic gaseous helium which allows a much larger range of resolved turbulent scales. The recording of temperature fluctuations is tested in the Barrel of Ilmenau which provides a controlled turbulent thermal flow in air. Measurements in the wake of a heated or cooled cylinder demonstrate the capability of the sensor to display the cross correlation between temperature and velocity correctly. |
id | oai-inspirehep.net-1756862 |
institution | Organización Europea para la Investigación Nuclear |
language | english |
publishDate | 2018 |
record_format | invenio |
spelling | oai-inspirehep.net-17568622021-03-01T10:44:03Zdoi:10.1063/1.4989430http://cds.cern.ch/record/2694251englishSalort, JulienRusaouën, ÉléonoreRobert, Laurentdu Puits, RonaldLoesch, AlicePirotte, OlivierRoche, Philippe-ECastaing, BernardChilla, FrancescaA local sensor for joint temperature and velocity measurements in turbulent flowsDetectors and Experimental TechniquesWe present the principle for a micro-sensor aimed at measuring local correlations of turbulent velocity and temperature. The operating principle is versatile and can be adapted for various types of flow. It is based on a micro-machined cantilever, on the tip of which a platinum resistor is patterned. The deflection of the cantilever yields an estimate for the local velocity, and the impedance of the platinum yields an estimate for the local temperature. The velocity measurement is tested in two turbulent jets: one with air at room temperature which allows us to compare with well-known calibrated reference anemometers, and another one in the GReC jet at CERN with cryogenic gaseous helium which allows a much larger range of resolved turbulent scales. The recording of temperature fluctuations is tested in the Barrel of Ilmenau which provides a controlled turbulent thermal flow in air. Measurements in the wake of a heated or cooled cylinder demonstrate the capability of the sensor to display the cross correlation between temperature and velocity correctly.oai:inspirehep.net:17568622018 |
spellingShingle | Detectors and Experimental Techniques Salort, Julien Rusaouën, Éléonore Robert, Laurent du Puits, Ronald Loesch, Alice Pirotte, Olivier Roche, Philippe-E Castaing, Bernard Chilla, Francesca A local sensor for joint temperature and velocity measurements in turbulent flows |
title | A local sensor for joint temperature and velocity measurements in turbulent flows |
title_full | A local sensor for joint temperature and velocity measurements in turbulent flows |
title_fullStr | A local sensor for joint temperature and velocity measurements in turbulent flows |
title_full_unstemmed | A local sensor for joint temperature and velocity measurements in turbulent flows |
title_short | A local sensor for joint temperature and velocity measurements in turbulent flows |
title_sort | local sensor for joint temperature and velocity measurements in turbulent flows |
topic | Detectors and Experimental Techniques |
url | https://dx.doi.org/10.1063/1.4989430 http://cds.cern.ch/record/2694251 |
work_keys_str_mv | AT salortjulien alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT rusaoueneleonore alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT robertlaurent alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT dupuitsronald alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT loeschalice alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT pirotteolivier alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT rochephilippee alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT castaingbernard alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT chillafrancesca alocalsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT salortjulien localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT rusaoueneleonore localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT robertlaurent localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT dupuitsronald localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT loeschalice localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT pirotteolivier localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT rochephilippee localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT castaingbernard localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows AT chillafrancesca localsensorforjointtemperatureandvelocitymeasurementsinturbulentflows |